/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

/* 容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 头部样式 */
header {
    text-align: center;
    margin-bottom: 40px;
    padding: 30px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    font-weight: 700;
}

header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 主内容样式 */
main {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

/* PDF部分样式 */
.pdf-section {
    background: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.pdf-section:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.pdf-section h2 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #444;
    border-bottom: 2px solid #667eea;
    padding-bottom: 10px;
}

/* PDF容器样式 */
.pdf-container {
    width: 100%;
    height: 600px;
    overflow: hidden;
    border: 1px solid #e0e0e0;
    border-radius: 5px;
}

.pdf-embed {
    width: 100%;
    height: 100%;
}

/* 脚注样式 */
footer {
    text-align: center;
    margin-top: 60px;
    padding: 20px;
    color: #777;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    
    header p {
        font-size: 1rem;
    }
    
    .pdf-section {
        padding: 20px;
    }
    
    .pdf-section h2 {
        font-size: 1.5rem;
    }
    
    .pdf-container {
        height: 400px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }
    
    header {
        padding: 20px 10px;
    }
    
    header h1 {
        font-size: 1.8rem;
    }
    
    .pdf-container {
        height: 300px;
    }
}